First time I tried it, there were spaces in the filename of the pdf I wanted to view. No-go.
Replaced the spaces with dashes, got the pdf displayed, pages progressed but as a 'flat' file, no cube.
Figured out that if I wanted the cube to revolve, I needed to put the page numbers in the 'transition' box, as in:
1 2 3 4 5
with spaces between the numbers. Then it worked fine.

Would be nice if it had a default setting of transition at each page.

Also if the pdf page is portrait, it only displays the top half - no way to view the bottom of that page, it just goes to the next page.